I have listened to them a couple of times and have always been very impressed. Yes they cost a lot, but if you have the money... The Moon 600i integrated is the one that has impressed me the most. Can't see that anyone would need anything more. When I heard it a while back expensive Audio Physic speakers were used and a very good good vinyl setup. I listened to both my own and the stores records and I was blown away, everything was perfect in my opinion. Depth, details, soundstage etc etc... The amp did nothing wrong, thats's for sure.